Marietta Weather Forecast

    • 71
    • 90

    Chance Thunderstorms

    • 70
    • 90

    Chance Thunderstorms

    • 71
    • 93

    Slight Chance Thunderstorms

    • 71
    • 93

    Slight Chance Thunderstorms

    • 70
    • 89

    Slight Chance Thunderstorms

    • 70
    • 89

    Chance Rain Showers

Today 15 Aug Central Greenville

Partly sunny with a chance of Showers and Thunderstorms. Highs around 90. Northeast Winds around 5 Mph. Chance of rain 40 percent.

Tonight 15 Aug Central Greenville

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the lower 70s. North Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marietta Temperature Statistics

August Temperature

Greenville Downtown Airport (14.3 miles)

  • Lowest 3 August, 2025

    64 °F

  • Average August

    73.7 °F

  • Highest 1 August, 2025

    93 °F

Climate (2020–Present)

Greenville Downtown Airport (14.3 miles)

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  • Average Low 2020–2025

    54.8 °F

  • Average 2020–2025

    63.6 °F

  • Average High 2020–2025

    72.8 °F
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